Heating accessory for sheet conveyers



J. E. DOYLE.

HEATING ACCESSORY FOR SHEET CONVEYERS.

APPLICATION FILED AUG-20. 1920- Patented J an. 3, 1922.

2 SHEETS SHEET 1- ]izvezziaz 13y ills alij J. E. DOYLE. HEATING ACCESSORY FOR SHEET CONVEYERS- APPLICATION FILED AUG.20, 1920.

Patented Jan. 3, 1922.

2 SHEETS-SHEET 2.

fi/Wfi 2 by 131.9 a I James E. DOYLE, or CLEVELAND, OHIO.

HEATING ACCESSORY FOR. SHEET CONVEYERS.

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Application filed'August 20, 1920.

T (ZZZ whom it on my concern Be it known that 1, JAMES E. DOYLE, a citizen of the United States, residing at 205 Caxton Bldg, in the city of Cleveland, county of (Juyahoga, and State of Ohio, have invented a new and useful Improve ment in Heating Accessories for Sheet Conveyers, of which the following is a specification the principle of the invention being herein explained and the bestmode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to a heating accessory and more particularly to a contrivance adapted to be used in conjunction with a heater mounted upon a machine upon which a sheet or sheets are to be conveyed. The drawings exemplify the application of my invention to a printing press provided with a heater as shown described and claimed in my copending application filed November 1, 1919, Serial No. 337,273.

The general object of my invention is to facilitate the delivery of printed sheets over an incandescent heater and to insure smooth and regular delivery of the sheets. Particular objects of my invention are:

1. The provision of devices positioned in advance of the heater with reference to the direction of travel of the sheet and somewhat elevated relative to the top of the heater whereby to determine the direction and proximity of the sheet to the glowing source of heat. Practice has demonstrated that some control should be had of the front edge of a paper sheet at the moment it is about to enter the heated zone, in order to avoid a curling. of the sheets and consequent likelihood of entanglement. Such an undesirable result was not only apt to occur owing to the speed of travel of thesheet, but also because if the fly sticks were not properly adjusted according to the size of the sheet the latter was not uniformly supported along its front edge. It is true, that the fly sticks at. the delivery end of a printing press have heretofore been made adjustable, but when the fly sticks were adjusted the necessary stop fingers were also. This was a disadvantage because the spacing of the fly sticks need not and should not in every instance determine the spacing of the stop fingers. Accordingly I have provided for an adjustment of the fiy sticks irrespective of the stop fingers.

Specification of Letters Patent.

Patented J an. 3, 1922.

Serial No. 4%,931.

heater and then perforated such surface so as to counteract the tendency just referred to.

My invention prevents offset, removes static electricity, permits carrying of sufficlent ink, insures perfect jogging, allows quicker backing up, eliminates fumes which vitiate atmosphere, lower vitality and injure health, speeds up delivery of thin stock, avoids flame with attendant danger of fire and condemnation of some state laws, avoids use of matches,.obviates escaping gas risk, avoids oxygen consumption, thereby increasing pressroom efficiency, does not fail, avoids waste heat, as it is regulated to heat any portion of entire sheet, furnishes more intense heat than from gas, up to 1000 degrees, has been recommended by Cleveland Board of Underwriters, may be operated through the controller switch of press, assures faster running of all stocks and yet reduces paper spoilages.

Adverting to the drawings:

Figure I is a diagrammatic view in part elevation and part section showing my invention doubly associated with a cylinder press.

Figure 11 is an enlarged plan view on line 11-11 of Figure 1. j

Jigure H1 is a still further enlarged (full size) section on line HIIH of Figure 11.

Only cursory mention will be made of the necessary supporting parts and a few others which aid in making clear the relative position of my heating accessory.

So much of the main frame of a printing press as is shown in outline I have designated by the reference numeral 1. A further portion of the frame is seen to overhang the first mentioned portion adjacent the cylinder 2. The platen 3 is seen somewhat below and superimposed upon it a numberof inkin rolls 4 are visible. Rotably mounted upon the over-hanging portion and a portion of the frame removed forwardly therefrom are a pair of rollers 5 and 6 respectively. These rollers actuate the conventional type of belt conveyer 7, the upper portion of which is designed to travel in a direc-' tion away from the cylinder. Positioned somewhat farther beyond and in the direction of travel of the conveyer 7 is a deposit table 8. The upper surface of this table is provided near its outer edge with an abutting rail 9. Disposed above the table 8 and inclined upwardly toward the cylinder are a pair of lateral supporting members 10 which incidentally answer as guides for the side edges of the moving paper sheets P.

A gripping device whose function consists in carrying paper sheets forwardly beyond the location of the roller 6 will now be described. Generally speaking, it involves a traveling carriage provided with gripping fingers and a pair of lirlied arms capable of reciprocating it when actuated in a manner not shown since common to the art. arm 11 is pivotally mounted to the frame at 12. The free extremity of the arm 11 articulates through the medium of a pivot pin 13 with the second arm 14, and the extremity of this arm articulates in a similar manner through the medium of a pin 15 with the carriage 16. The carriage 16 involves in its construction forwardly and rearwardly disposed rollers 17 which are adapted to travel upon the members 10. The carriage 16 is provided with a depending bracket 20 which supports a rod 21 extending between the members 10. Secured along the rearward portion of the rod 21 and fixedly maintained in an inclined position are a plurality of aligned fly sticks 22. These fly sticks constitute a movable table upon which the sheet of paper P is supported during transit. A pair of clamps 23 and 24 envelop opposite ends of the rod 21 and are bound to the same through the medium ofbolts 25 and nuts 26. This connection is best shown in Fig. II. The lower clamps 23 are longer than the others and extend some distance beyond. Such added extensions of the clamps 23 I have designated as 27. Supported upon these extensions and extending across from one to the other is the electrical heater which corresponds t that of my earlier application, filed. November 11, 1919 Serial No. 337 ,273. It includes a channel support 28 secured as by rivets 29 to the extensions 27 as shown in Figure III. Disposed in the support 28 are a pair of superimposed insulating plates 30 each provided with a series of channels 31, ,occupied by the resistance coils 32. The latter are caused to glow and radiate heat.

Supported in any suitable manner, in this case with rivets 33 is a bent guard 34 including a downwardly extending end 35 disposed in a substantially upright position just ahead of the heater with reference to the direction of movement of the paper sheet P thereover. The portion 35 is provided above the heater with a series of perforations 36 which may One 7 be seen in Figure II. The purpose of such apertures is to counteract the momentary retardation of the rear edge of the paper sheet which is passing over it by eliminating the back pull and hesitation due to a suction affect. The other end 37 of the guard 34: slopes downwardly in a direction away from the heater as is clearly shown in both Figures I and III. 1

Thefly sticks 22, as is illustrated in Figure II, may be variously spaced apart to suit the requirements of the particular job. The determining factor in spacing the sticks 22 is not always the same as the factor which should determine the spacing i stop fingers, and it is accordingly desirable to have the adjustment separately accomplished. A red 38 carries a series of brackets'39 adapted to be rotatably fixed by means of top screws 40. The brackets 39 in turn carry the stop fingers 11 which are automatically lifted and depressed in a manner well known to the art whenever the rod 38 is oscillated. According to my invention the stop fingers 41 are permitted to rest upon theguard 3 1. In

Figure III it willbe observed that I provide wires 12 divaricating from the sticks 22 and terminating above the guard 34 upon which their free ends may rest. The purpose of the wires 42 is to avoid sagging of the paper sheet or entanglement of any of its edges.

I claim 1. A device of the character described comprising a heater over which printed material is to pass, of a device disposed adjacent to said heater and belowthe path of travel of said material, said device adapted to maintain an equilibrium of atmospheric pressure above and below the passing material whereby to counteract retardation 2f the sheet by elimination of a suction ef- 16013.

2. A device of the character described comprislng a heater over .which printed sheets are to pass, of aperforate guard dis posed ahead of said heater with reference to the direction of travel of said sheets.

3. A device of the character described comprising a heater over which printed sheets are to pass, of a guard disposed adj acent to said heater and below the path of travel of said sheet, said guard being elevated with respect to said heater.

4. A device of the character described comprising a heater over which printed sheets are to pass, of an angularly shaped guard carried by said heater and disposed ahead of it with reference to the direction of travel of said sheets, said guard having a perforated upright section and a section downwardly inclined therefrom, both sections being elevated with respect to said heater, but below the path of travel of said sheets.

5. A device of the character described comprising a heater over which printed material is to pass, of a guard projecting above said heater and ahead of it with reference to the direction of approach of said material, said guard being disposed below the path of travel of said material and perforated for the purpose specified.

6. A device of the character described comprising a heater over which printed material is to pass, of a guard projecting upwardly above said heater and on that side of it which is first approached by said maport extending laterally in a direction across,

the path of movement of said conveyed sheets and located between said heater and the delivery end of said carriage whereby to support the sheet at the moment of its delivery over said heater.

9. A printing press accessory adapted for cooperation with a sheet conveyer, comprising a heater and a perforated. support extending between the delivery ends of said conveyer and located ahead of said heater with reference to the direction of movement of a sheet upon said press, said support adapted to sustain a moving sheet irrespective of the relative position of said conveyer and heater.

10. A printing press accessory adapted for use in conjunction with a sheet conveyer, comprising a heater and a perforated delivery guard both extending laterally in a direction across the path of movement of said conveyed sheets and below the plane of movement thereof, said guard being higher than said heater.

11. A printing press accessory adapted for use with a conveyer adapted to deliver sheets, comprising a heater, and a guard mounted adjacent to said heater and provided with a perforated surface at a higher elevation than the top of said heater.

12. A printing press accessory adapted for use with a sheet conveyer, comprising a heater, said conveyer being provided with a series of aligned and flaring supports aujacent to said heater whereby to improve passage of said sheets toward the heater.

13. A printing press accessory adapted for use with a sheet conveyer, comprising a heater, and supports extending obliquely between said conveyer and heater.

14. A printing press accessory adapted for use with a sheet conveyer, comprising a heater, a guard mounted ahead of said heater with reference to the direction of travel of a sheet upon said conveyer, and a flaring support at the point of meeting of said conveyer and guard.

15. A printing press accessory adapted for use with a sheet conveyer, comprising a heater, a guard mounted ahead of said heater with reference to the direction of movement of a sheet upon said conveyer, the latter including a flaring support at the point of its meeting with said guard.

16. A printing press accessory adapted for use with a sheet conveyer, comprising a heater, a guard mounted ahead of said heater with reference to the direction of movement imparted to a sheet by said conveyer, to-

ward and supports carried by said conveyer andextending obliquely between it and said guard.

Signed by me, this 10th day of August,

JAMES E. DOYLE. 

